hulbert



MACHIN R SECURING VES URES.

A 'MIONv FILED NOV. 1,319,082. Patented 001.2119111.

2 SHEETS-SHEET l.

wlTN EssES E. F. HULBERT.

MACHINE FOR SECURING VESSEL CLOSURES.

' AFPUCAHON FILED N0v.26. 1917.

1,319,082., y Patented out. 21., 1919.

2 SHEETS-SHEET 2.

WITNESSES INVENTOR UNITED sTATEs PATENT oEEIcE.

EDWIN F. HULBERT, 0F MILWAUKEE, WISCONSIN, ASSIGNOR T0 NATIONAL PAPERlCAN COMPANY, 0F MILWAUKEE, WISCONSIN, A CCRPORATION OF DELAWARE.

` MACHIN E FOR SECURING VESSEL-CLOSURS.

Specification of Letters Patent.

Patented Oct. 21, 1919.

Original application led April 25, 1914, Serial No. 884,362. Divided andthis application led November 26, 1917. Serial No. 203,923.

To all 'whom z't may concern:

Be it known that I, EDWIN F. HULBERT, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and Sta-te ofWisconsin, have invented a new and useful Machine for SecuringVessel-Closures, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification, in which- Figure 1 is a partial sectionshowing the flanged closure in place, Figs. 2, 3, 4 and 5 are similarviews showing the successive operations performed in securing theclosure in place, and Figs. 6, 7 and 8 are vertical sections through thecomplete dies, the positions of the dies corresponding to the positionsshown in the parti-al sections lof Figs. 3, 4 and 5, respectively.

My invention relates to the securing of end closures in cans or similarpackages, whether made of paper, metal, or other maferial.

This application is a division of my oopending application Serial No.834,362, filed April 25, 1914.

rPhe object of the invention is to provide a simple and effectivemachine which will give a strong closure, resistant against jars orshocks in shipping, handling, etc. The invention is particularlyapplicable to the securing of flanged closures in paper cans,

although it may be applied to other receptacles and other materials.`The main object of my invention is to lock the closure in place withoutthe necessity of an interior mandrel on which the receptacle body issupported.

In Fig. 1, 2 represents the side wall of the can or receptacle and 3 theclosure having a circumferential outwardly projecting flange-4. In thefirst operation of the device an exterior circular die 5 is used havinga circumferential interior recess, as shown at 6, and which die ispreferably made in sections. An expansible interior die or mandrel, partof which'is shown at 7, is used in connection with the outer diev and inthe first operation the parts of the inner die 7 are forced outto causethe lips on the inner die to crimp the walls of the closure flange andthe can body outwardly into the groove in the outer die or anvil, all asshown in Fig. 2. In the next movement, as shown in Fig. "3', the end die8 having a depending edge portion and a groove insidev thereof is moveddownwardly within the outer die 5 and curves the registering edges ofthe closure flange and receptacle end inwardly and downwardly las shown.The pressure in this step, while suiicient to start the roll-over, isnot suiiicien-t to overcome the support given to the cap by the pinchingaction of the inner and.

outer dies-5 and 7.

In the next step, shown in Fig. 4, a new outer die or anvil 9, which maybe made in sections, 4and a new expanding inner die or mandrel 10 areused, but the pinching action between these dies remains the same as inthe first movement, and the endwise moving die 11 acts downwardly.rollingover the registering portions of the ange and receptaclen andinto the seam formed as shown.

.In the fourth and final step, shown in Fig. 5,-the inner and outer dies12 and 13 are again changed land the order of movement is reversed. Thatis, the endwise moving die 14 moves downward until it rests on therecessed portion of the anvil 12 carrying with it the rolled-over seamportion until this rolled-over seam portion is brought in contact withthe bottom 3 of the cap. The parts of the expand-ing inner, die 13 arethenforced outwardly and radially, as indicated by the arrow, The upperpart of the recessed edge portion first cornes in contact with the upperpart of the seam and the angle of contact forces the roll downwardly andoutwardly into the recess or bead portion formed in the first movement.The pressure exerted by this inner die is suiiicient to tightly compressthe folds together, lock the parts in place by forcing them into thebead or recess in the wall of the receptacle and give a hard wearingedge.

The advantages of my invention result mainly from doing away with theneed for interior mandrel support and providing for securing closures toboth ends of the receptacle, if desired. This is accomplished by thepinching action of the inner and outer dies, whichA gives suiiicientsupport While the preferred embodiment of the l invention has @beenillustrated and Vdescribed, it is to beunderstn'od that the invention isnot limited to its illustrated embodiment,"but may be embodied in otherstructures Within the scope of the following claims:

1. Apparatus for securing a flanged cap closure to a canwithout engagingthe inside of the can, comprising a die adapted to surround the can bodyand having an inwardly opening groove, a die adapted to fit Within theflanged cap and having a projection to register with the groove andarranged toV force a portion of the flange and registering can bodyyintothe groove thereb forming an outwardly extending bead on t e can body,and means adapted to engage and turn over the edges of the-flangeand canbody and thereby form a closure seam, the outwardly extending |beadengaging the groove Ain the first named die and serving to support canbody into the groove, and a third die adapted to be moved endwiseagainst the edges of the flange and can 'body and turn over such edgesto form a seam, the can being supported by its engagement with.

this groove and projection against the end- Wise pressure of the thirddie; substantially as described.

3. Apparatus for securing a flanged cap closure to a can Withoutengaging the inside of the can, comprising a means adapted to engage andturn over by endwise pressure the edges of the flange and body to form aclosure seam, and means adapted to support the lcan Lagainst suchendWise pressure includin a die surrounding the can body and having aninwardly opening groove and a die fitting within the canbody andoperating. to force and hold a portion of the can body and the flangeWithin such groove; substantially as described.

4, Apparatus for securing a flanged ca closure to a can without engagingthe insi e of the can, comprising a die adapted to surround the canbody, a second die adapted to fit Within the flanged cap, said diesbeing adapted to clamp the cap flange and body between them, and a thirddie adapted to be `.moved against the edges of the cap and flange bodyWhile so held and turn over the said edges to form a closure seam;substantially as described.

5. A device of the character described, comprising means for supportinga can body having a dished lid inserted in the end thereof, including aninner supporting member and an outer supporting member which are adaptedto be relatively moved together to press the can body 'between' them,and a die adapted to coperate With said. supporting members to moldtogether the edges of the can body and lid; substantially as described.

6. A device. of the character described, comprising means for supporting`a can body having a dished lid inserted in the end

